Self-oiling saw



J. P. DOMAN.

SELF mums SAW.

APPLICATlON FILED JULY 16, I921.

1,409,684. Patented Mar. 14, 1922.

UNITED STATES PATENT OFFICE.

JOHN P. IDOMAN, OF LOS ANGELES, CALIFORNIA, ASSIGNOR OF ONE-HALF T0 ORVAL T, i

. DEAL, OF LOS ANGELES, CALIFORNIA.

SELF-OILING SAW.

Specification of Letters Patent.

Patented Mar. 14, 1922.

Application filed July 16, 1921. Serial No. 485,250.

To all whom 2'25 may concern:

Be it known that I, JOHN P. DOMAN, a citizen of the United States, and resident of Los Angeles, in the county of Los Angeles and State of California, have invented certain new and useful Improvements in Self- Oiling Saws, of which the following is a full, clear, and exact description.

My invention relates to means carried by a saw for oiling the blade thereof, and has for its object to provide such a device which may be easily and cheaply manufactured.

Another object of the invention is to provide a valved oiling device which may be quickly assembled with the saw handle, and which when so assembled will occupy an in conspicuous position.

Another object of the invention is to so mount the oiler that it occupies an inclined position when the saw is in normal horizontal position, and thereby feeds the oil by gravity.

It is also an object of the invention to provide novel fastening means for securing the oiling device with respect to the saw handle.

Other objects of the invention will be ap parent from the following description when taken in connection with the accompanying drawing, in which;

Figure 1 is a fragmentary side view of a saw having a portion broken away to show the oiling device.

Figure 2 is a section through a portion of the saw and oiling device, showing the valve in open position; and

Figure 3 is a longitudinal section through the oil receptacle, with the valve in closed position. 1

Referring to the drawingmorc in detail, numeral 1 designates the saw generally, which is provided with the usual handle 2. Formed in the handle 2 is an inclined cylindrical pocket 3, which is narrowed to provide a shoulder 4: and restricted passage 5.

In Figure 3 of the drawing I have shown the oil receptacle per se. This receptacle consists of the cylindrical body portion 6 and screw plug 7, the latter having a laterally extending flange 8. It should be here stated that the plug is provided with a slightly tapered shoulder 9, which prevents the flange 8 from seating on the edge of the receptacle, and at the same time forms a seal for the container. The annular space provided between the edge of the container 6 and the flange 8 has a distinct function to be later described.

The lower end of the oil receptacle is formed with an opening 10 for feeding oil into the restricted passage 5. The screw plug 7 is provided with a centrally disposed opening 11, which forms a combined vent and bearing for the spring pressed valve stem 12, which carries the valve 13 and also the valve 14. The valves are operated in ope direction by means of a spring 15. humeral 16 indicates the handle for operating the valve stem and valves 13 and lit. The purpose of valve 1 1 is to form a tight seal in connection with the tapered seat in the screw plug 7 To lock the oiling device in assembled relation with the saw I provide the novel means indicated at 17, which consists of a pivoted latch adapted to be swung into position with its end in the annular groove formed by the spacing of the flange S at a slight distance from the top of the receptacle.

The slight taper 9 on the screw plug 7 performs the function of releasably holding the latch in locking engagement.

In use, when it is desired to oil the saw. the handle 16 is pulled outwardly against the pressure of the spring 15, the valve 13 is thereby opened as is also the valve 14:, the latter allowing air to enter the reccptacle and thereby permitting any desired quantity of the oil to leave the receptacle. The oil on leaving the receptacle passes through the passage 5 and runs onto the saw blade in a manner that will be readily understood.

If, for any purpose, it is found desirable to remove the oil receptacle, it is only necessary to disengage the latch 17 and the entire oiling device can be withdrawn. For the purpose of refilling the receptacle with oil however, it is only necessary to remove the screw plug 7.

In accordance with the patent statutes I have described what I now believe to be the best embodiment of the invention, but I do not wish to be understood thereby as limitingmyself or the scope of the invention, as many changes and modifications "may be made Without departingfronfthdspifit ef vicecon lpri'sing a, receptacle, a "screw plug the invention, all such I aim toinclude 111 for closing one end of the receptacle, the 10 the scope of the appended claim. plug having an lenlarged tapering head What I claim as new and desire to secure pl'oviding a-n annular channel and 2L latch 5 by Letters Patent is: pivoted 0n the saw handle and bindingly The combination with a saw having a engaged by said tapered head. pocket in the handle thereof, of an oiling device seatediin said pocket, said oiling de- JOHN P.-'DOMAN. 

